Bibliographies thématiques / Tradescantia virginiana

Littérature scientifique sur le sujet « Tradescantia virginiana »

Auteur : Grafiati

Publié le 26 juillet 2024

Mis à jour le 26 juillet 2024

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Articles de revues sur le sujet "Tradescantia virginiana"

Martínez, Arturo, et Héctor D. Ginzo. « DNA content in Tradescantia ». Canadian Journal of Genetics and Cytology 27, n^o 6 (1 décembre 1985) : 766–75. http://dx.doi.org/10.1139/g85-114.

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There is a wide variation in the nuclear DNA content and chromosome size between the species belonging to the T. crassifolia and T. virginiana alliances (all the species but one are native to Central and North America). Also the DNA content per genome decreases when the ploidy level increases within the same specific polyploid complex with three ploidy levels (2x, 4x, and 6x). In contrast, no variation was found in the DNA content per genome between different ploidy levels in the T. fluminensis alliance (all the species are native to South America) where they range from 6x to 22x. Since all the species described here are perennials with various life forms, it was possible to analyze the relationship between the DNA content and their vegetative adaptation to the environment. The more specialized species (geophytes and hemicryptophytes) have a higher amount of DNA than the chamaephytes adapted to live in relatively more mesic regions. In the species living in Central and North America there is a positive correlation between the increase in DNA content and the latitude of their native regions.Key words: Tradescantia, DNA content, geographical distribution, life forms, polyploidy.

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Tarkowska, Jadwiga A., Mirosława Ważyńska et Alina A. Jabłonowska. « Translocation of nuclei and reorientation of the mitotic apparatus in the ontogeny of stomata in Trudescuntia virginiana L. » Acta Societatis Botanicorum Poloniae 56, n^o 4 (2014) : 599–610. http://dx.doi.org/10.5586/asbp.1987.053.

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In vitro studies of the ontogeny of stomata of young leaves of <em>Tradescantia virginiana</em> L. showed that: 1) translocation of nuclei, often along long, winding paths took place in companion cell mother cells before the onset of asymmetric mitosis, 2) the reorientation of the entire mitotic apparatus took place during division of quard cell mother cells. Pertinent factors which may play a role in both processes are indicated.

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White, Sarah A., Holly L. Scoggins, Richard P. Marini et Joyce G. Latimer. « Multivariate Repeated Measures Analysis of Plant Growth Regulators on Tradescantia virginiana ». HortScience 40, n^o 2 (avril 2005) : 404–8. http://dx.doi.org/10.21273/hortsci.40.2.404.

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Little information is available on cultural requirements for greenhouse production of Tradescantia virginiana L. We tested three plant growth regulators (PGRs) at ascending rates on T. virginiana `Angel Eyes,' `Blue Stone,' and `Red Cloud' in an effort to find appropriate application levels for height suppression. Treatments applied two weeks after transplant. Each PGR was applied once at the following rates: paclobutrazol at 0, 40, 80, 120, or 160 mg·L-1, uniconazole at 0, 15, 30, 45, or 60 mg·L-1, or flurprimidol at 0, 15, 30, 45, 60, or 75 mg·L-1. Repeated measures experimental design and multivariate analysis was used to examine plant responses to PGRs over time. The most effective paclobutrazol rate for adequate height suppression was 120 mg·L-1. Uniconazole at 30 to 45 mg·L-1 and flurprimidol at 45 to 60 mg·L-1 resulted in adequate height control. `Blue Stone' and `Red Cloud' appeared more responsive (greater suppression of height at rates applied) to both uniconazole and flurprimidol than `Angel Eyes.' These results suggest that cultivars respond in a different manner to PGRs applied to them; more compact growth can be obtained for cultivars tested using these suggested rates. Chemical names used: trifuloromethoxy phenyl-5-pyrimidinemethanol (flurprimidol); [(±)-(R*,R*)-ß-((4-chlorophenyl) methyl)-?-(1,1,-dimethylethyl)-1H-1,2,4,-triazole-1-ethanol)] (paclobutrazol); uniconazole.

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Wada, Hiroshi, Jiong Fei, Thorsten Knipfer, Mark A. Matthews, Greg Gambetta et Kenneth Shackel. « Polarity of Water Transport across Epidermal Cell Membranes in Tradescantia virginiana ». Plant Physiology 164, n^o 4 (4 février 2014) : 1800–1809. http://dx.doi.org/10.1104/pp.113.231688.

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Nejad, Abdolhossein Rezaei, et Uulke van Meeteren. « Stomatal response characteristics of Tradescantia virginiana grown at high relative air humidity ». Physiologia Plantarum 125, n^o 3 (novembre 2005) : 324–32. http://dx.doi.org/10.1111/j.1399-3054.2005.00567.x.

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Saito, Mikako, Hideaki Matsuoka et Kunihiro Kasamo. « Isolation of H+-translocating ATPase in tonoplast of Tradescantia virginiana L. leaf cells ». Journal of Biotechnology 100, n^o 3 (février 2003) : 221–29. http://dx.doi.org/10.1016/s0168-1656(02)00244-4.

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Sassen, M. M. A., et A. M. C. Wolters-Arts. « CELL WALL TEXTURE AND CORTICAL MICROTUBULES IN GROWING STAMINAL HAIRS OF TRADESCANTIA VIRGINIANA ». Acta Botanica Neerlandica 35, n^o 3 (août 1986) : 351–60. http://dx.doi.org/10.1111/j.1438-8677.1986.tb01297.x.

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Saito, Mikako, Tomoo Homma, Yasuyuki Nemoto et Hideaki Matsuoka. « Intracellular potential change of Tradescantia virginiana L. leaf in response to CO2 stress ». Bioelectrochemistry and Bioenergetics 32, n^o 2 (novembre 1993) : 133–43. http://dx.doi.org/10.1016/0302-4598(93)80031-o.

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Wolniak, Stephen M. « The regulation of mitotic progression in plant cells ». Proceedings, annual meeting, Electron Microscopy Society of America 49 (août 1991) : 204–5. http://dx.doi.org/10.1017/s0424820100085320.

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Mitosis is the process responsible for the partitioning of replicated chromosomes. In virtually all eukaryotes, the synchronous separation of sister chromatids delineates the simultaneous end of metaphase and onset of anaphase, but the mechanisms signaling this event are not known. It seems reasonable to suspect that the intracellular signaling pathways responsible for passage through the metapnase/anaphase transition involve changes in the cytosolic activities of protein kinases and phosphatases as well as shifts in the cytosolic level of calcium. We have used the exquisite temporal precision in mitotic progression exhibited by stamen hair cells from the spiderwort plant Tradescantia virginiana in a temporal bioassay to assess when during prophase and metaphase regulatory cascades involving calcium, and protein kinases and phosphatases may be initiated in living cells.

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Valster, A. H., L. Vidali et P. K. Hepler. « Nuclear localization of profilin during the cell cycle in Tradescantia virginiana stamen hair cells ». Protoplasma 222, n^o 1-2 (1 septembre 2003) : 85–95. http://dx.doi.org/10.1007/s00709-003-0005-7.

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Thèses sur le sujet "Tradescantia virginiana"

White, Sarah Ann. « Nutrition and Plant Growth Regulator Rates for High Quality Growth of Containerized Spiderwort (Tradescantia virginiana L.) ». Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/31866.

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Spiderwort (Tradescantia virginiana) is a flowering herbaceous perennial. Little information is available about its production requirements. This project’s purpose was to determine fertilizer and PGR rates for high quality growth of Spiderwort in a greenhouse production setting. The first experiment screened three plant growth regulators (PGRs) at ascending rates on three T. virginiana cultivars. The most effective rates for height suppression were paclobutrazol at 120 mgּL-1, uniconazole at 45 mgּL-1, and flurprimidol at 45 mgּL-1. The second experiment was divided into two parts. The first screened three T. virginiana cultivars for their growth response to several nitrogen (N) rates. The second experiment used results from the first experiment and examined two cultivars response to a basic fertilizer. For experiment 1, N rates between 100 and 200 mg‧L-1 resulted in quality plant growth. The second experiment showed little difference between height, width and flowering of both cultivars with these N rates. Plant quality was similar for plants fertilized with 100 and 200 mgּL-1 N at the end of both experiments. The third study examined how fertilization rate affects the persistence of PGR growth control. PGR rates identified as effective in experiment 1 were used. Plants fertilized with 200 mgּL-1 N were taller than those fertilized with 100 mgּL-1 N, regardless of PGR treatment. PGRs did not suppress plant growth; plant quality was similar regardless of treatment. The results of these studies indicate that PGR effectiveness in suppressing plant height may be dependent upon season, with PGR application necessary only during the spring growing season.
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Sunderland, Paul Andrew. « A study of cytosolic free calcium in the regulation of mitosis in stamen hair cells of Tradescantia virginiana ». Thesis, Lancaster University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288959.

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DePass, Anthony Lyndon. « Calcium regulation in Tradescantia virginiana : Roles for involvement of inositol 1,4,5-trisphosphate and cyclic ADP-ribose ». 1999. https://scholarworks.umass.edu/dissertations/AAI9920594.

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Fluorescent ratiometric imaging and spectrofluorometric analysis was used to study two signal transduction mechanisms in the stamen hair cells of Tradescantia virginiana. The first study determined the metabolic pathway necessary for the inactivation of Inositol 1,4,5-trisphosphate mediated calcium release from intracellular stores in the living plant cell. Tradescantia stamen hair cells, preloaded with the calcium sensitive ratiometric dye fura-2-dextran, were injected with analogs of Inositol 1,4,5-trisphosphate and cytosolic calcium levels monitored by ratiometric imaging. The injected analogs were selected due to their insensitivity to various kinases and phosphatases for which Inositol 1,4,5-trisphosphate is a substrate. We determined that the 5-phosphatase is the preferred pathway for inactivation of Inositol 1,4,5-trisphosphate in the living plant cell. The second study investigated cyclic ADP-ribose mediated calcium release in the intact plant cell and determined the presence of the metabolic machinery necessary to synthesize cyclic ADP-ribose from its precursor NAD+. Cyclic ADP-ribose was observed to cause calcium release in the stamen hair cells of Tradescantia that were preloaded with the calcium sensitive dye fura-2-dextran. Evidence of cyclic ADP-ribose synthesis was determined using two experimental techniques. Homogenates of the sea urchin Lytechnicus piclus were used as bioassays to detect cyclic ADP-ribose in extracts of Tradescantia stamen hair cells that were incubated with [special characters omitted]NAD+. Cyclic ADP-ribose synthesis was detected from fluorimetric analysis of the homogenate as the calcium sensitive dye fluo-3 was present in the homogenate to detect cyclic ADP-ribose mediated calcium release from sea urchin egg microsomes. We also determined cyclic ADP-ribose synthesis by injection of fura-2-dextran loaded stamen hair cells with [special characters omitted]NAD+ and observing a delayed calcium increase in the cytosol. These results establish the metabolic fate of inositol 1,4,5-trisphosphate in plant cells and demonstrate the biochemical capability for plant cells to synthesize cyclic ADP-ribose to mediate calcium release in plants.

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Livres sur le sujet "Tradescantia virginiana"

Gregory, Philippa. Virgin earth. New York : Simon & Schuster, 2005.

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Gravis, Auguste. Recherches Anatomiques et Physiologique Sur le Tradescantia Virginica L. Au Point de Vue de l'organisation Générale des Monocotylées et du Type Commélinées en Particulier. Creative Media Partners, LLC, 2018.

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Virgin Earth. London : HarperCollins, 1999.

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Virgin Earth. Touchstone, 2006.

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Gregory, Philippa. Virgin earth. Harper Collins, 2000.

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Virgin Earth. New York : St. Martin's Press, 1999.

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